textproduct: Quad Cities

KEY MESSAGES

- Near Seasonable Sunday on tap with at least partial sunshine.

- Some cool nights in store over the next several days, then warming up by mid to late next week.

- Precip chances increase for Tuesday night and especially Thursday into Friday as a frontal system organizes across portions of the Midwest.

SHORT TERM /THROUGH SUNDAY NIGHT/

Issued at 221 PM CDT Sat Apr 4 2026

Tonight...A few light showers or sprinkles possible into early evening mainly north of I-80, otherwise a mostly cloudy night as ongoing stratocu get trapped under an inversion aloft. Ongoing LLVL pressure gradient to keep west to northwesterly sfc winds going overnight of 15 to 25 MPH. Mixing winds and cloud cover will keep temps up in the mid to upper 30s, but some lower 30s possible in the west where there may be a few breaks in the cloud deck toward morning.

Sunday...Hopefully subsidence clearing will continue acrs the area leading to mostly sunny skies, and CU rule parameters suggest cumulus reformation not getting higher than sctrd coverage. Mixing up to at least H9 MB on the fcst soundings produces a lot of low to mid 50s for highs, but ongoing northwesterly sfc winds of 15 to 25 mPh will put an edge to the warmth. Sunday night, northwesterly steering flow aloft will shuttle a clipper-like wave down acrs the upper MS RVR Valley and although moisture is limited, this feature may produce some sctrd light showers north of I-80 Sunday evening and into the overnight. Low CHC POPs introduced for this potential. Nocturnal vertical temp profiles even suggest a few snow flakes may mix in if the showers do indeed materialize. Lows Sunday night in the low to mid 30s but west to northwest winds maintaining at least 5-10 MPH and more clouds may limit frost production.

LONG TERM /MONDAY THROUGH SATURDAY/

Issued at 221 PM CDT Sat Apr 4 2026

Monday and Tuesday...Seasonably strong sfc high pressure to drop down the upper MS RVR Valley into the western GRT LKS Monday with below normal high temps in the 40s to low 50s. Broad northwesterly steering flow will look to continue to shuttle vort max's down through the plains and Midwest. One such wave may bring overrunning precip chances close to the southwestern CWA Monday night, but better chances effecting more of the area may come Tuesday into Tuesday night as the flow aloft flattens out into near zonal orientation and the sfc high pulls away off to the east with low to mid level warm air advection taking place. There may be some precip type issues with wintry mix potential later Tue into Tue night with still lingering cold profiles in the low to mid levels before better warming comes in by Wednesday.

Back to Monday night, away from any overrunning cloud cover from the southwest, a cold air mass in place with low sfc DPTs suggest a seasonably cold night and freezing conditions with lows well down in the 20s. Tuesday highs held in the 40s with clouds and precip.

Wednesday through Friday...Continued warming and with better moisture return off the western Gulf as this mid to late week period progresses. Ensemble upper jet patterns lean toward upper troffiness developing acrs the northern and central plains, while a LLVL boundary organizes and pushes acrs the upper Midwest acting as a precip focal point later Wed into Thu. Then signs of this feature laying out along west-to-east tightening LLVL baroclinicity and continuing to be a convergent focus for southerly warm moist conveyor to impinge upon and over for more robust precipitation events Thu into Friday. Thus more unsettled weather looks in line at the moment for late next week.

AVIATION /00Z TAFS THROUGH 00Z MONDAY/

Issued at 605 PM CDT Sat Apr 4 2026

Breezy WNW to NW winds, on the backside of a departing Great Lakes low, will continue across eastern Iowa and northwest Illinois through the period. Stratus clouds will remain trapped beneath a low-level inversion leading to periods of MVFR at times; ceiling heights will vary between 1500-4500 ft AGL tonight into early Sunday AM (lowest at DBQ late tonight).

DVN WATCHES/WARNINGS/ADVISORIES

IA...None. IL...None. MO...None.